fix(cli): bump undici from 7.16.0 to 7.29.1 (two high-severity advisories)

[0xPlayerOne]

Summary

packages/cli pins undici: 7.16.0, which is affected by two high-severity advisories:

• GHSA-rfgv-xxqx-mfg5 — Denial of Service via unrequested WebSocket subprotocol (patched in 7.29.1)
• GHSA-w293-vg96-wgc3 — TLS certificate validation bypass via dropped connect options in BalancedPool (patched in 7.29.1)

This bumps the pin to 7.29.1 and regenerates pnpm-lock.yaml (lockfileVersion 9.0 unchanged).

Motivation

Projects that depend on @graphprotocol/graph-cli transitively inherit the vulnerable undici and have to carry local overrides to pass their own dependency audits (we do, in our CI). Bumping the pin here fixes it for everyone.

Validation

• pnpm install --lockfile-only completes cleanly; lockfile resolves undici@7.29.1.
• No API changes between 7.16.0 → 7.29.1 that affect graph-cli's fetch usage (patch releases on the 7.x line).

[changeset-bot]

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Latest commit: 877bc39

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